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J/AJ/116/2395       BV photometry in five SMC clusters       (Mighell+, 1998)

WFPC2 observations of star clusters in the Magellanic clouds. II. The oldest star clusters in the Small Magellanic Cloud. Mighell K.J., Sarajedini A., French R.S. <Astron. J. 116, 2395 (1998)> =1998AJ....116.2395M (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Photometry, UBV ; Clusters, open Keywords: galaxies: evolution - galaxies: individual: Small Magellanic Cloud - galaxies: star clusters - galaxies: Local Group Abstract: We present our analysis of archival Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) observations in F450W (∼B) and F555W (∼V) of the intermediate-age populous star clusters NGC 121, NGC 339, NGC 361, NGC 416, and Kron 3 in the Small Magellanic Cloud. We use published photometry of two other SMC populous star clusters, Lindsay 1 and Lindsay 113, to investigate the age sequence of these seven star clusters in order to improve our understanding of the formation chronology of the SMC. We analyzed the V versus B-V and MV versus (B-V)0 color-magnitude diagrams of these populous Small Magellanic Cloud star clusters using a variety of techniques and determined their ages, metallicities, and reddenings. These new data enable us to improve the age-metallicity relation of star clusters in the Small Magellanic Cloud. In particular, we find that a closed-box continuous star formation model does not reproduce the age-metallicity relation adequately. However, a theoretical model punctuated by bursts of star formation is in better agreement with the observational data presented herein. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tables.dat 46 34732 WFPC2 stellar photometry of the SMC clusters NGC 416, 121, 339, 361 and Kron 3
Byte-by-byte Description of file: tables.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Cluster Cluster name 9- 17 I9 --- MSF Identification number in the cluster (1) 20- 25 F6.3 mag Vmag V magnitude 28- 32 F5.3 mag e_Vmag rms uncertainty on Vmag 34- 39 F6.3 mag B-V colour index 42- 46 F5.3 mag e_B-V rms uncertainty on B-V
Note (1): Cl* "Cluster" MSF Nyyyyxxxx in Simbad, where N is the WFPC2 chip number (1, 2, 3 or 4), yyyy the y coordinate of the star multiplied by 10 and xxxx the x coordinate of the star multiplied by 10.
History: From AJ electronic version References: Mighell et al., (Hodge 11) Paper I. 1996AJ....111.2314M
(End) James Marcout, Patricia Bauer [CDS] 05-Jan-1999
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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